baber/WOPTO huggingface dataset:
Patent KR-19990006502-A (KR)
Title: 전화기의 다주파 부호(ｍｆｃ) 톤 다이얼 신호 보안방법 및 장치
IPC: H04M3/16
Filed: 1998-05-27
Abstract: 본 발명은 전화기의 MFC 톤 다이얼 신호 보안 시스템에 관한 것으로서, 특히 MFC 방식 전화기를 사용하여 은행이나 카드사 등에서 제공하는 폰 뱅킹 서비스를 이용하는 경우, 전화기에서 출력되는 MFC 톤 다이얼 신호를 그대로 전송하지 않고 암호화하여 전송함으로써, 폰 뱅킹 서비스 등을 이용할 때 이용자 중요한 정보가 누출되는 것을 방지하여 은행(또는 카드사)과 고객간의 신뢰성을 향상시키기 위한 것이다. 
     이를 위하여 본 발명은 송/수신측 전화기가 통화 가능하도록 연결된 상태에서 상기 송신측에서 특수 번호에 해당하는 MFC 톤이 검출되거나 외부에서 특정 키입력 조건이 검출되면 스스로 임의의 난수를 생성하여 전화 회선망을 통해 전송하거나 혹은 전송받고, 자신이 생성한 난수와 상기 전송받은 난수 및 별도의 기 설정된 인증치로 다수의 인증함수값을 계산하여 그 계산 결과를 비교하는 동작으로 송/수신측에 대한 상호 인증을 실행하는 단계; 상기 송신측 전화기에서 MFC 톤 다이얼 신호가 발생되면 그 신호를 디코딩한 후 함수 변환하여 암호화하는 단계; 상기 암호화된 결과를 전화 다이얼 번호와 대응시키기 위하여 실제 전화기에서 발생된 MFC 톤 다이얼 신호와는 다른 정상 톤으로 다시 재변환하여 전화 회선망을 통해 전송하는 단계로 이루어지는 전화기의 MFC 톤 다이얼 신호 보안방법 및; MFC 톤 다이얼 신호의 암호화를 위하여 특정 조건을 검출하는 암호화 설정수단; 전화기로 이어지는 내선과 국선 사이의 신호 전송경로를 스위칭 동작에 의해 전환할 수 있도록 한 전화선 절환수단; 스스로 임의의 난수를 생성하여 전화 회선망을 통해 전송하거나 혹은 전송받고, 자신이 생성한 난수와 상기 전송받은 난수 및 별도의 기 설정된 인증치로 다수의 인증함수값을 계산하여 그 계산 결과를 비교하는 동작으로 송/수신측에 대한 상호 인증을 실행하는 암호화 모듈 상호 인증수단; 전화기의 누름 버튼에서 발생되는 MFC 톤 다이얼 신호를 임의의 암호화 함수를 이용하여 변환하는 암호화 수단; 송신측과 수신측의 전화 회선망이 연결된 상태에서 특정 조건이 검출되었을때에 상기 암호화 모듈 상호 인증수단을 제어하여 송신측과 수신측 일치 여부를 판단하고, 그 결과로 상기 암호화 수단 및 전화선 절환수단을 제어하여 전화기의 MFC 톤이 암호화 전송되게 하는 주 제어수단을 포함하는 MFC 톤 다이얼 신호 보안장치를 특징으로 한다.
Patent KR-19990013387-A (KR)
Title: 포장용기의 입구부 조합
IPC: B65D17/28
Filed: 1998-06-02
Abstract: 입구부 조합을 재폐쇄함에 있어서의 액상 내용물 튀김 또는 흩뿌림을 방지하고자 안출된 포장용기용 입구부 조합. 해당 입구부 조합(1)은 주입구(5)내로 눌러질 수 있는 선단과 주입구(5)의 단면적보다 큰 단면적의 후단 압축부(10)가 구비된 폐쇄기구(4)를 갖는다. 상기 압축부(10)는 상기 주입구(5)쪽을 향한 억제굽(14)을 갖는 바, 해당 억제굽(14)은, 해당 입구부 조합의 재폐쇄시에 있어 주입구(5) 둘레의 벽면(3)과 접촉하게 되어, 벽면상의 잔류 내용물(9)이 튀기는 것을 방지한다.
Patent KR-20000001713-A (KR)
Title: Inhaling device for vehicle
Inventor: LEE YOUNG CHOON
IPC: F02M35/12
Filed: 1998-06-12
Abstract: PURPOSE: An inhaling device with a resonator coping variably with an inhaling noise generated from a various frequency range is provided. CONSTITUTION: A resonator comprises:a resonating tube(20) containing a closed inner space; a resonating tube side connecting tube(22) formed on the resonating tube for penetrating to the resonating tube and containing a female screw unit at the end; an inhaling duct side connecting tube(24) containing a male screw unit at the end for possibly connecting to the female screw unit of the resonating tube side connecting tube for combining to the resonating tube side connecting tube to adjust the combining depth and formed on an air flowing tube body such as an inhaling duct(6) in a penetrating state.
Patent KR-20000003567-A (KR)
Title: Gate electrode manufacturing method at electrostatic discharge protecting circuit
Inventor: KIM JONG HWAN
IPC: H01L29/78
Filed: 1998-06-29
Abstract: PURPOSE: A gate electrode manufacturing method is provided to increase electrostatic discharging characteristic by protecting the joining part of the edging of a device dividing insulating film and a gate electrode from generating an electric field. CONSTITUTION: The gate electrode manufacturing method at an electrostatic discharge protecting circuit comprises the steps of: forming a frame gate electrode in which both sides are connected inside the active area of a semiconductor substrate but forming not to pile up on the edging of the device dividing insulating film; and forming to surround an active area that is connected with a pad side, by a Vss or an active area that is connected with the Vcc.
Patent KR-20000003965-A (KR)
Title: Dry cleaning method for trench
Inventor: JUNG EI SAM
IPC: H01L21/28
Filed: 1998-06-30
Abstract: PURPOSE: When fabricating a semiconductor element in a semiconductor technique, dry cleaning method for trench is provided to effectively clean the restricted internal part of the trench and to reduce the processing costs and time. CONSTITUTION: A dry cleaning method for trench includes the step of removing an inorganic polymer(23) formed in the internal part of the trench by use of NH3 and O3 gases when etching the trench. NH3 gas acts for NH4OH solution in a conventional wet cleaning process, and O3 gas acts for H2O2 solution. Using further the inactive gas such as Ar, He or N2 carrier gas improves uniformity being a disadvantage in a dry etching operation.
Patent KR-20000008559-A (KR)
Title: Noise reduction structure of outdoor device of air conditioner
Inventor: SU SANG HO
IPC: F24F1/12
Filed: 1998-07-14
Abstract: PURPOSE: A noise reduction structure of an outer device of an air conditioner is provided to enhance the reliability of products by minimizing the noise generated from the outer device and to promote the assembling efficiency by lowering the number of components. CONSTITUTION: A noise reduction structure comprises:a compressor(20) installed on one side of a case(10); an accumulator(60) connected with one side of the compressor to be installed on the side of the compressor; and an axial fan(40) and a motor(50) installed on the case(10) to be placed on the side of a condenser(30)
Patent KR-20000009476-A (KR)
Title: Electrolyte injection apparatus of reserved battery
Inventor: KU BON SOON
IPC: H01M2/36
Filed: 1998-07-24
Abstract: PURPOSE: An electrolyte injection apparatus of reserved battery is provided to simplify the structure and reduce manufacturing cost by assembling a subside piston to a main piston. CONSTITUTION: The apparatus comprises a main piston(5) formed at upper part of an electrolytic bath(2); a subside piston(7) assembled to the main piston and operating by gas pressure of a gas generator(6); a subside piston housing(8) for operating the subside piston; and a cutting pin(9) of long rod shaped structure having a blade(9A) at end portion of the cutting pin(9) and formed monolithic lining with the subside piston(7). The spacing size of the subside piston housing(8) has 2-3 times of the operating space.
Patent KR-20000014800-A (KR)
Title: Cleaning method using ventilation system of a load-lock chamber
Inventor: LEE KWANG
IPC: H01L21/304
Filed: 1998-08-25
Abstract: PURPOSE: A method for cleaning is provided to reduce a loss of a wafer due to corrosion and particles by using a ventilation system for opening a door of load-lock chamber. CONSTITUTION: The cleaning method comprises the steps of loading (S1) a wafer cassette in a load-lock chamber; closing (S2) a door of the load-lock chamber; rising (S3) a pressure in the load-lock chamber until a setting value by opening two vacuum valves; falling (S5) a pressure in the load-lock chamber until a predetermined setting value by opening an exhausting valve; rising (S6) a pressure in the load-lock chamber to the setting value by opening the vacuum valve; repeated performing the rising (S3) and the falling (S5) steps until the cleaning process of the wafer is completed.
Patent KR-20000015345-A (KR)
Title: Duplexer filter
Inventor: KIM JAE-BEOM
IPC: H01P1/205
Filed: 1998-08-28
Abstract: PURPOSE: A duplexer filter is provided to increase a liability and, simultaneously, diversify a filter design with an error of a coupling device value reducing. CONSTITUTION: A duplexer filter includes a transmitting end(20) and a receiving end(10) which include a large number of dielectric material resonator(DR), thereby, simultaneously, transmitting and receiving a signal. The receiving end includes a substrate, a first MCC group, and a second MCC group. A predetermined pattern is formed on the substrate so that the dielectric material resonator is installed and, electrically, connected. The first MCC group is to control an input and an output impedance and, simultaneously, to couple with the dielectric material resonator. The second MCC group is to in series connect to the dielectric material resonator and form a large number of attenuating pole for a frequency selection between a passage frequency band and a cut-off frequency band. The transmitting end includes a substrate, a micro-strip line(12e) of a predetermined pattern, a third MCC group, and a fourth MCC group. The substrate is that the dielectric material resonator is installed and, electrically, connected. The third MCC group is to in series connect to the dielectric material resonator and form a large number of attenuating pole for a frequency selection between a passage frequency band and a cut-off frequency band. The micro-strip line is to control an input and an output impedance and, simultaneously, to couple with the dielectric material resonator. The fourth MCC group is connected to the micro-strip line in parallel and passes a constant frequency band.
Patent KR-19990066765-A (KR)
Title: 스페어 셀의 배치에 상관없이 테스트를 행할 수 있는반도체 기억 장치
IPC: G11C11/401
Filed: 1998-09-18
Abstract: 노멀 셀과 치환하는 스페어 셀 SC의 배치의 차이를 판정하는 블럭 판정부(16)와, 노멀 셀을 스페어 셀 SC로 치환한 경우에 스페어 셀 SC이 반전 데이타를 기억할 때에는 스크램블 온 신호 SON을 생성하는 데이타 스크램블 제어 회로(20)와, 스크램블 온 신호 SON을 수신하여 기록 데이타를 반전시키는 스크램블 회로(10)와, 스크램블 온 신호 SON을 수신하여 판독 데이타를 반전시키는 스크램블 회로(8)를 구비한다.
Patent KR-20000021235-A (KR)
Title: Vacuum pump of vapor depositing apparatus of metal thin film
Inventor: HONG DONG PYO
IPC: F25B9/00
Filed: 1998-09-28
Abstract: PURPOSE: A vacuum pump of a vapor depositing apparatus is provided to easily analyze and keep the pumping state by separately measuring each pressure of many cry pumps connected in a multi-structure. CONSTITUTION: A vacuum pump is cooled in a compressor(4), and compressed He is re-diffusioned inside cry pumps(2). A residue generated inside a vacuum chamber is pumped to the outside by cooling a panel(2a) and an optical baffle(2b) and by sticking the compressed gas using a charcoal as a porous material remained in the panel(2a) and the optical baffle(2b). The cry pumps(2) is connected to one compressor(4) with a multi-structure of 2-3 pieces through a line for supplying He(8a) and a return line(8b), and the returning pressure is measured by installing a pressure gage(10) in each return line(8) of He for connecting between the cry pump(2) and the compressor(4).
Patent KR-20000021914-A (KR)
Title: Heat radiation plate of diffusion pump
Inventor: JUN JAE GYU
IPC: H01L21/02
Filed: 1998-09-30
Abstract: PURPOSE: A heat radiation plate of a diffusion pump is provided to eliminate possibility of a fire by blocking heat transmission and to control diffusion pump efficiently. CONSTITUTION: A heat radiation plate of diffusion pump is composed of three different plates(14) located under the bottom of the heater(8) in a diffusion pump. The order of the three different plates is a first aluminum alloy sheet(15), a back grite(16), and a second aluminum alloy sheet(17). The depth of each plates is 2mm, 4mm and 2mm by sequence. The radiation plate(14) restraints heat conduction to bottom(2) of the diffusion pump. The radiation plate(14) may have round shape and one body with the heater(8).
Patent KR-20000024901-A (KR)
Title: Ion source module of ion injector
Inventor: YOON JEONG WOOK
IPC: H01L21/265
Filed: 1998-10-02
Abstract: PURPOSE: An ion source module of ion injector is provided to save a cost required in a manufacture of a semiconductor product by inserting a rear surface slit portion between an arc reaction chamber and a source aperture. CONSTITUTION: An arc reaction chamber(21) in which a reaction is occurred is installed. A gas providing tube(22) provides a gas for forming an ion beam(30) to the arc reaction chamber(21). A filament(23) is installed in an inner portion of the arc reaction chamber(21) and emits a thermal electron. A source electrode(24) is installed to both sides of the arc reaction chamber(21) and provides a voltage. A source aperture(25) is connected to the arc reaction chamber(21) and forms a hole(26) for extracting the ion beam(30) generated in the inner portion of the arc reaction chamber(21). A rear surface slit portion(27) is connected between the arc reaction chamber(21) and the source aperture(25).
Patent KR-20000026335-A (KR)
Title: Multi channel direct memory access system capable of real-time control
Inventor: LEE JAE SIN
IPC: G06F13/28
Filed: 1998-10-20
Abstract: PURPOSE: A multi channel direct memory access system capable of real-time control is provided to be operated in a real time by performing a direct memory access using a time slot method. CONSTITUTION: A CPU writes a source address and an object address located in a buffer descriptor 0(BD0) of a RAM(24) to a source address register and an object address register in the case that a DMA module(22) receives a service from a plurality of devices(260-26n). The CPU sets a DMA start bit of a DMA control unit(229). The DMA module(22) accesses a memory while a value of a buffer descriptor change count(BDCC)(227) is 0, or a value of a transmission counter(226) is 0. The DMA module(22) records a transmission count(TCNT) to current transmission count information(40) of a buffer descriptor(BD). The DMA module(22) sets an effective bit of buffer descriptor state information(30) as 1 when the value of the BDCC(227) is 0 and the value of TCNT(229) is not 0.
Patent KR-20000028431-A (KR)
Title: Circuit for adjusting brightness in shifting mode of monitor
Inventor: LEE MUN GEOL
IPC: H04N5/57
Filed: 1998-10-31
Abstract: PURPOSE: A circuit adjusting brightness, in a shifting mode of a monitor is provided to give a mode signal by inputting a horizontal/vertical synchronization signal to a micom, and by automatically deciding a text mode or a graphic mode to turn on/off a transistor according to the mode signal, to highly/lowery adjust a contrast signal, and to adjust brightness of the screen when shifting the mode. CONSTITUTION: A circuit for adjusting brightness of a screen in a shifting mode of a monitor comprises a video free amplifier(210), a video power amplifier(220), a micom(230), key inputter(240), a contrast adjusting circuit, a contrast adjusting device, a first transistor(Q11), and a second transistor(Q12). The video free amplifier amplifies an R.G.B(Red-Green-Blue) signal inputted through a video card of a computer, and adjusts brightness in reference to a contrast signal. The video power amplifier drives a cathode of a CRT(Cathode Ray Tube) by amplifying output of the video free amplifier. The contrast adjusting device induces the contrast signal adjusted through predetermined first/second split resistance(R11, R12) and variable resistance(VR1). The micom is received a horizontal/vertical synchronization signal, and outputs a mode signal by deciding a graphic mode or a text mode. The first transistor is turned on in the text mode, and turned off in the graphic mode, in reference to the mode signal of the micom. The second transistor adjusts the contrast signal lower by flowing current through the first/second split resistance in the text mode, by being reversely operated with the first transistor, and highly adjusts the contrast signal by flowing the only first split resistance, through bypassing the second split resistance in the graphic mode.
Patent KR-19990045629-A (KR)
Title: Ｓｒａｍ-셀 장치 및 그 제조 방법
IPC: H01L21/8244
Filed: 1998-11-27
Abstract: SRAM-셀 장치는 메모리 셀 당 적어도 6개의 트랜지스터를 포함한다.  트랜지스터들 중 4개는 플립 플롭을 형성하고 사각형의 꼭지점에 배치된다.  플립 플롭은 사각형의 대각선으로 마주 놓인 꼭지점에 인접하게 사각형의 외부에 배치된 2개의 트랜지스터에 의해 트리거된다.  워드 라인을 따라 인접한 메모리 셀은 인접한 메모리 셀의 제 1 비트 라인과 제 2 비트 라인이 일치하도록 배치된다.  트랜지스터들은 바람직하게는 버티컬이며, 층 연속체로 형성된 반도체 구조물(St1, St2, St3, St4, St5, St6)에 배치된다.  n-도핑된 채널 영역을 가진 2개의 트랜지스터가 바람직하게는 2개의 반도체 구조물(St3, St4)에 형성된다.
Patent KR-19990014642-A (KR)
Title: 모피가공방법 및 그로부터 얻어진 모피원단
Filed: 1998-11-28
Abstract: 본 발명은  각종모피로  모피의류를  만들고자  할 때  토끼나 여우 그리고  밍크 등과  같은  짐승의  털가죽을  벗겨내어  모피상태로  가공된  공지의  모피를  털이  상하지  않도록  특수한  방법으로  프레스에  의해  작동하는 가공금형으로  압착하여  털이  형성된  표면상측으로  돌출되는  다양한  형태의  엠보싱돌부를  성형함은  물론  상기한  방법으로  성형된  모피의  엠보싱돌부의  가죽내에  엠보싱돌부의  형상과  일치하도록  성형한  별도의  쿠손재로된  패드를  삽입한다음  상기  패드가  이탈되지  않도록  통상의  안감을  덧대고  재봉하여서된  모피원단을  제공함으로써,  이와  같은  모피원단을  이용하여  모피의류를  만들어  사용할  경우  엠보싱돌부에  의해  각종모피의 털이  눕혀지지 않고 자연스럽게  세워짐으로써  더욱  풍성하고  부드러운  느낌을  주도록  하여 외관미를  아름답게  함은  물론  사용상  부주의로  털이  옆으로  뉘여지더라도 쿠숀재로된  패드로  받쳐져  형상이  지속적으로  유지되는  엠보싱돌부에  의해  굴곡이 형성되어  있어  원근이나  음영감에  의해  외관상으로  전혀  지장을  주지  않는등  고품질  고품격을  유지토록하며  상기  엠보싱돌부의  모양을  다양하게 형성하여  다양한  형태의  굴곡면을  갖는  모피의류를  생산토록 함으로써 소비자의 취향에  맞는  다양한  제품의  모피의류를  선택할  수  있도록  한  것이다.
Patent KR-20000034550-A (KR)
Title: Apparatus for preheating a lower mold for forming panels
Inventor: JEONG JAE BEOM
IPC: B29C33/02
Filed: 1998-11-30
Abstract: PURPOSE: A preheating apparatus is provided to enable to preheat a lower mold thoroughly, cause to shorten the preheating time and enhance accordingly the workability thereof. CONSTITUTION: The apparatus is comprised of at least a burner nozzle(17,19) and support members. The burner nozzle is characterized by disposing it at one side region of a lower mold(14) to spray flame for the formed side of the lower mold. The support members are characterized by supporting the burner nozzle, and also including a fuel supply(27) and a distributor(20). The fuel supply gives fuel from the outside to the burner nozzle. The distributor functions as intermittent bridge by positioning between the nozzles.
Patent KR-20000034635-A (KR)
Title: Apparatus for monitoring channel of wavelength division multiplexing (wdm) system
Inventor: JEONG KOO HONG
IPC: H04B10/07
Filed: 1998-11-30
Abstract: PURPOSE: An apparatus for monitoring channel of a wavelength division multiplexing (WDM) system is provided so that a management and operation of WDM system become easy by monitoring a wavelength, an output of light, and an optical signal to noise ratio (OSNR) at real time. CONSTITUTION: An apparatus for monitoring channel of a wavelength division multiplexing(WDM) system includes a measuring device, which measures an intensity of outputted light corresponding to the central wavelength of a tapping channel signal by using a wavelength variable light band pass filter(23) at a plurality of channel monitoring points positioned to the input and output terminal of the plurality of light amplifier. A microprocessor(27) processes the measured output light intensity signal as a digital signal and obtains information on a light spectrum of the corresponding light signal, simultaneously, controls the wavelength variable band pass filter(23) for making the wavelength band vary.
Patent KR-20000038789-A (KR)
Title: Method for producing cold rolled steel sheets with high strength and formability
Inventor: HAN SANG HO
IPC: B21B3/00
Filed: 1998-12-09
Abstract: PURPOSE: A method for producing cold rolled steel sheets is provided to have excellent strength and formability by controlling the composite ingredient of steel and the conditions of rolling and heat treatment. CONSTITUTION: Steel is composed of 0.0015-0.0025wt% of C, 0.5-1.0wt% of Mn, 0.04-0.06wt% of P, under 0.006wt% of S, under 0.003wt% of N, under 0.06wt% of Al, 0.007-0.013wt% of Nb, (48/14XNwt%-(48/14XNwt%)+(48/12XCwt%X0.6) of Ti, and the remnant wt% of Fe and impurities. Then, the steel is hot rolled at a temperature of over 910°C for being cold rolled at a cold rolling reduction ratio of 77%. And the steel is re-crystalline annealed at the temperature of 840-860°C for completing a cold rolled steel sheet with excellent strength.
Patent KR-20000039069-A (KR)
Title: Method for maintaining duplicated data consistency in switching system
Inventor: WON BYONG JAE
IPC: H04Q1/00
Filed: 1998-12-10
Abstract: PURPOSE: A method for maintaining duplicated data consistency in a switching system is provided to effectively distribute signal transmission number and transfer rate by using a write-through concept. CONSTITUTION: Duplicated data of a requesting processor and a specific processor are changed according to a request of changing the duplicated data and an effective state is displayed. An invalidation signal is transmitted to a target processor searched by the requesting processor to invalidate the duplicated data and the invalidation state is displayed. It is checked whether the target processor searched by the specific processor has been completely invalidated.
Patent KR-20000040022-A (KR)
Title: System for managing data service by radio and method for the same
Inventor: HAN DONG WON
IPC: H04B17/00
Filed: 1998-12-14
Abstract: PURPOSE: A system for managing data service by radio and method for the same are provided to allow a manager to monitor overall states and errors of a system via a PC or a notebook computer though the manager locates remote from the system, by adding a microprocessor circuit data processor assembly(m-CDPA) into a general inter-working function(IWF) device. CONSTITUTION: FRICC, FRIL2 and FRIL3 are software blocks that respectively process a link between an IWF device and ASS-F of a switch station, call and packet. A CDICC and MDMCC are software blocks that process a call in the IWF device and manage resources therein. respectively. If a procedure for setting up a protocol between a mobile terminal and a CDPA is completed(S1-S18) and a TCP/IP is enabled, the MDMCC analyzes a receipt number. If the receipt number is a predetermined specific one that represents a call for a system monitor, the MDMCC activates the m-CDPA and then connects a modem allocated for a practical data traffic and a modem in the m-CDPA(S19-S24). Thus, a monitor task according to the activation of the m-CDPA allows a monitor control task to process an input and output addresses of a board.
Patent KR-20000043769-A (KR)
Title: Hot rolled steel plate having excellent workability and weatherability and production method thereof
Inventor: LEE SANG RO
IPC: B21B1/22
Filed: 1998-12-29
Abstract: PURPOSE: A hot rolled steel plate and its production method are provided to solve a problem of an existing mini mill process and to use elements such as a Cu, a Cr and so on contained in a scrap iron as corrosion resistant elements, a Ni as a preventing element of surface crack and a nitrogen of high concentration in a steel as a rising resource of hardness. CONSTITUTION: A steel is composed of a C of 0.03-0.06wt%, Mn of 0.25-0.70wt%, Si under 0.4wt%, P of 0.05-0.15wt%, S under 0.006wt%, Cr under 0.6wt%, Ni under 0.4wt%, Cu under 0.5wt%, Sn of 0.001-0.04wt%, a soluble Al of 0.04-0.10wt%, N under 150ppm, Ca of 0.0002-0.008wt%, Fe and other impurities and is satisfied a condition of a ratio of Mn/S larger than 30(1) and a ratio of Cu/Ni larger than 0.5(2). A slab is rolled at first after producing by melting the steel and by continuously casting. A hot rolled steel bar is heated at a temperature under 1080°C in a derived heating furnace. A finishing rolling is performed in the temperature over 870°C by maintaining an atmospheric temperature of coil box under 1080°C. The hot rolled steel bar is wound up at the temperature over 550°C. Thereby the hot rolled steel plate having the excellent workability and the weatherability is produced.
Patent KR-20000043794-A (KR)
Title: Method of controlling alloy of hot galvanized alloy steel sheet
Inventor: JANG SE GI
IPC: C23C2/06
Filed: 1998-12-29
Abstract: PURPOSE: A method of controlling the alloy of a hot galvanized alloy steel sheet is provided to manufacture all of hot galvanized alloy steel sheets without changing Al content of a plating bath and to enhance workability. CONSTITUTION: In manufacturing a hot galvanized alloy steel sheet in a plating bath added by 0.18wt% of Al, 0.2-0.4wt% of Mn is added to the plating bath and a heating temperature is adjusted within a range of 550-600°C for the alloy of a plated layer. That is, a hot galvanized alloy steel sheet is manufactured, having 9.5-10.5wt% of Fe on the plated layer without changing Al content of the plating bath by adjusting only a heating temperature of the plated layer within the rage of 50°C depending on Mn content in the bath.